SUMMARY https://bugreports.qt.io/browse/QTBUG-77826 https://github.com/linuxwacom/xf86-input-wacom/issues/93 This is a qt based problem. This bug affects 19.10kubuntu and the rolling release of neon. To briefly explain the bug, certain applications can not be operated at all (tablet stylus operation only) because the tablet point coordinate position offset is shifted. The bug reported by the wacomtablet git team in response to this has been addressed promptly, and it seems that it will be addressed in qt 5.14, 5.15. However, until kubuntu and kde desktops incorporate this fix, 19.04 users and 18.04lts users will not be able to update due to applications that cannot be operated with a tablet stylus. Tablet styli are sometimes used not only for drawing but also as a replacement for mice (often as a treatment for tendonitis). So when will xsetwacom address this bug? On kubuntu19.10 I tried to install the day before yesterday, qt was still in the bugged version of 5.12.4. Examples of related applications Media player \ smplayer and vlc Screencast \ obs Media Viewer \ gwenview Virtual pc \ virtualbox Office \ libreoffice SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.16.5 (available in About System) KDE Plasma Version: KDE Frameworks Version: 5.62.0 Qt Version: 5.12.2 ADDITIONAL INFORMATION Should this be posted on the kde forum https://forum.kde.org/index.php if this is not the place to ask a question?
Since it's a bug in Qt, most appropriate fix would be having fixed Qt version packaged in Kubuntu and Neon. Unfortunately at the moment there seems to be no fixed version released yet. Bugfix release 5.14.1 seems to be planned on January 21st (in 4 days): https://wiki.qt.io/Qt_5.14_Release This is probably the version rolling Neon can get. Next 5.12 LTS bugfix release is on January 30. This is probably the version Kubuntu 19.10 will get. It might be worth opening a bug in corresponding packaging bugtrackers (neon packaging section here, kubuntu on launchpad) when those versions arrive to speed up the process. Judging by https://bugreports.qt.io/browse/QTBUG-77826 there are still some concerns if the fix is safe so maybe the fix shouldn't be backported by disros yet.
(In reply to Valerii Malov from comment #1) Thanks for the response. It seems that 19.04 users will not be able to update at least until the end of January, and it seems better for users using the kdeneon release to stop updating until it can be confirmed whether it was fixed on January 21. I will keep an eye on this bug fix.
befor > Is the fix for QTBUG-77826 supported? Fixed title. I thought I could prevent the same from being posted, but sorry if this wasn't the right fix
Reassigning to Neon developers. They might have an influence in Qt updates.
(In reply to Christoph Feck from comment #4) Ok, I want to see what this problem will be like. It's a really serious problem when using tablets with kubuntu or qt software.
Information that it became qt5.14 could not be confirmed with the installation of neon just the other day. The qt version was still 5.12.4 in the system update. The confirmation was done on virtualbox and the neon iso used was neon-user-20200123-1116. Well, it is a wonder if this is updated in qt on kubuntu 19.10. Well, it is whether this is updated with qt of kubuntu19.10. If not, the next issue may be reported again. Of course, by the user operating the tablet stylus. > A / B / C / D or some apps cannot be operated with tablet stylus!
add Added application that some screens cannot be operated with tablet stylus (maybe) kdenlive (stabel, appimage) https://bugs.kde.org/show_bug.cgi?id=416679 https://bugs.kde.org/show_bug.cgi?id=416421
A related report was also on the forum, but no one is currently speaking. https://forum.kde.org/viewtopic.php?f=17&t=162089&hilit=wacom QT_XCB_TABLET_LEGACY_COORDINATES=1 <program> By the way, this solution does not help anything in ubuntu. The effect window and gwenview of kdenlive are software that cannot be operated with a tablet stylus even with 19.04. There was no change even if I tried this workaround. sad.
When I tried installing neon, it was qt5.13.2 today. Since this was done in a virtual box, it is not suitable for checking the operation of the tablet stylus, but considering that the update of qt5.14 has not hit, it may not have been improved yet.I'm worried about making my system kubuntu19.10.
Well, frankly, I'm very disappointed. Today's installation confirms that neither kdeneon nor kubuntu19.04 addresses this issue at all. Users who do some activities on the pc using graphic tablets may want to use another distro or windows instead of kdeneon. Is kdeneon for light users who only use the pc for light internet and video playback? And ubuntu has no control over this. Because of qt? And kdeplasma can not cope? How do you deal with the current development of kdeneon, what about it?
Oh, I made a mistake. The version of kubuntu that confirmed that no issues were addressed in today's installation was 19.10! If this became a major problem, the development team might have been willing to deal with it, right? Nobody writes here, it's stupid, and reporting bugs seems useless.
You are right. Please ask Ubuntu developers directly. KDE developers only maintain the KDE software in Neon.